Am I being unreasonable to insist that ds13 wears a helmet when he rides his bike? It has always been the rule that he wear one. He says that none of his friends do - which as far as I can tell, is true. He is on his bike all the time, riding to school and out with friends. He says that everyone is laughing at him and he's the only one who has to wear a helmet.
Dh is sympathetic to ds and says I should relax my rule. However, I'm not sure I could ever forgive myself if anything happened to him.
Ds is an experienced rider and has done the cycling proficiency test.
Anyone with biking teenagers - what are your rules? TIA